120402553 has 2 divisors, whose sum is σ = 120402554. Its totient is φ = 120402552.

The previous prime is 120402521. The next prime is 120402559. The reversal of 120402553 is 355204021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77211369 + 43191184 = 8787^2 + 6572^2 .

It is a cyclic number.

It is not a de Polignac number, because 120402553 - 2⁵ = 120402521 is a prime.

It is not a weakly prime, because it can be changed into another prime (120402559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60201276 + 60201277.

It is an arithmetic number, because the mean of its divisors is an integer number (60201277).

Almost surely, 2^120402553 is an apocalyptic number.

It is an amenable number.

120402553 is a deficient number, since it is larger than the sum of its proper divisors (1).

120402553 is an equidigital number, since it uses as much as digits as its factorization.

120402553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 120402553 is about 10972.8097131045. The cubic root of 120402553 is about 493.7933443122.

Adding to 120402553 its reverse (355204021), we get a palindrome (475606574).

The spelling of 120402553 in words is "one hundred twenty million, four hundred two thousand, five hundred fifty-three".